Science

Most fossils form when living things die and are buried by _______________ that hardens into rock over time.

• sediment

• people

• cement

• ants

The remains of ancient living animals, plants, or micro-organisms.

• paleontologist

• fossil

• dinosaur

• shark

The skeleton dissolves in the water and cavity remains is a

• mold fossil

• no fossil

• cast fossil

water rich in minerals can penetrate the mold and form a cast

• sediment

• mold fossil

• cast fossil

scientisit who study fossils

• Palentologist

• pschicologist

• doctors

Three types of fossils

• body part remain, mold, cast or whole skeletons, amber

• Fossil fuels

• trace fossils, footprints, coprolites

• friend fossils

Fossil dating methods

• relative dating

• no dating

• absolute dating

• final dating

It´s a change of weather that may last from decades to millions of years

• Climate change

• world change

• kids change

It´s a type of climatic change that has been occuring recently due the increce in the emission of polluting gases.

• Global warming

• Global cooling

• Global crisis

The fall of rain produced by emissions from motor vehicles and industrial emissions of sulfur dioxide and nitrogen oxide

• acid rain

• destruction

• acid snow